JP2024034518A - Control device, switching system, and control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to suppress an electromagnetic noise with a simple configuration.

SOLUTION: The control device includes a control unit configured to generate first control information regarding timing with which a first switching control device performs switching control and second control information regarding timing with which a second switching control device performs switching control on the basis of location information on the first switching control device and location information on the second switching control device.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

One embodiment of the present invention relates to a control device, a switching system, and a control method.

In a servo control system that drives and controls a multi-axis motor using a plurality of inverters, a technique is known in which switching noise is suppressed by making the carrier frequencies of the plurality of inverters different.

However, the number of carrier frequencies that can be used is finite, and if the number of inverters exceeds the maximum number of carrier frequencies that can be used, the same carrier frequency must be used by two or more inverters, which increases electromagnetic noise. There's a problem.

JP2015-27236A

Therefore, an embodiment of the present invention provides a control device, a switching system, and a control method that can suppress electromagnetic noise with a simple configuration.

In order to solve the above problems, according to an embodiment of the present invention, based on the position information of the first switching control device and the position information of the second switching control device, the first switching control device A control device is provided, comprising a control unit that generates first control information regarding the timing at which the switching control device performs switching control, and second control information regarding the timing at which the second switching control device performs the switching control.

FIG. 1 is a block diagram showing a schematic configuration of a control device and a switching system according to a first embodiment. 2 is a detailed block diagram of the switching control device shown in FIG. 1. FIG. The figure which shows an example of the distance between arbitrary two switching control devices. FIG. 3 is a diagram showing the relationship between distance and propagation loss obtained from equation (1). FIG. 2 is a block diagram showing the internal configuration of each switching control device in FIG. 1. FIG. FIG. 3 is a timing diagram illustrating processing operations of a PWM signal generation section. FIG. 1 is a diagram showing a specific example of a switching system according to a first embodiment. FIG. 8 is a diagram showing control parameters used by each switching control device in FIG. 7; FIG. 2 is a block diagram showing a schematic configuration of a switching system according to a second embodiment. The figure which shows the distance between arbitrary two switching control devices. FIG. 6 is a diagram showing carrier frequencies included in estimated control parameters of the switching control device.

Embodiments of a control device, a switching system, and a control method will be described below with reference to the drawings. Although the main components of the control device and the switching system will be mainly described below, there may be components and functions that are not shown or explained. The following description does not exclude components or features not shown or described.

(First embodiment)
FIG. 1 is a block diagram showing a schematic configuration of a control device 1 and a switching system 2 according to the first embodiment. The switching system 2 in FIG. 1 includes a plurality of switching control devices 3 and a central control device 4. The switching system 2 shown in FIG. The central control device 4 in FIG. 1 corresponds to the control device 1 according to the first embodiment. In this specification, the central control device 4 may also be referred to as an integrated control device.

Each of the plurality of switching control devices 3 includes a switching section 5 and a switching control section 6, as shown in FIG. 2, which will be described later.

The switching unit 5 includes one or more switching elements, and performs a switching operation of turning on or off the switching elements at predetermined timing. More specifically, the switching unit 5 includes an inverter, a converter, a transformer, and the like, and converts DC/AC, voltage, current, frequency, number of phases, etc. while suppressing power loss. The switching element described above is provided, for example, in an inverter or a converter.

The switching control device 3 is, for example, a power conversion device that converts a DC voltage generated by renewable energy power generation equipment such as a photovoltaic (PV) device into an AC voltage. This type of power conversion device is also called a power conditioner (PCS: Power Conditioning Subsystem). Note that the power conversion device may have a mode of converting DC voltage to AC voltage and a mode of converting AC voltage to DC voltage.

FIG. 2 is a detailed block diagram of the switching control device 3 shown in FIG. 1. Each of the plurality of switching control devices 3 shown in FIG. 1 has an internal configuration similar to that in FIG. 2. As shown in FIG. 2, the switching control device 3 includes, for example, a switching unit 5 that converts a DC voltage generated by renewable energy power generation equipment into an AC voltage, and a switching control unit 6.

As shown in FIG. 2, the switching control device 3 includes a boost chopper circuit 11, an inverter circuit 12, a transformer 13, and a switching control section 6. The boost chopper circuit 11 and the inverter circuit 12 constitute the switching section 5.

The boost chopper circuit 11 converts the voltage amplitude of the input DC voltage. The inverter circuit 12 converts the output voltage of the boost chopper circuit 11 into an alternating current voltage. The inverter circuit 12 generates an alternating current voltage by turning on or off the switching unit 5 based on a PWM signal generated using a carrier signal and a command signal, which will be described later. The transformer 13 converts the voltage amplitude of the AC voltage to generate a commercial power supply voltage of 100V. The switching control section 6 controls the boost chopper circuit 11 and the inverter circuit 12. The switching control unit 5 may be a semiconductor chip or discrete digital circuit component that performs digital signal processing, such as a CPU (Central Processing Unit) or a DSP (Digital Signal Processor), or may be a semiconductor chip or discrete component that performs analog signal processing. .

Each of the plurality of switching control devices 3 shown in FIG. 1 performs switching control to turn on or off the corresponding switching section 5 at a predetermined timing. Each switching control device 3 can individually control switching of the corresponding switching section 5. The number of switching control devices 3 in the switching system 2 may be two or more, and the number of switching control devices 3 is arbitrary. In this specification, any two of the plurality of switching control devices 3 are referred to as a first switching control device 3_1 and a second switching control device 3_2.

The central control device 4 generates control information regarding the timing at which the plurality of switching control devices 3 perform switching operations based on the position information of the plurality of switching control devices 3 and supplies it to each switching control device 3 . The central control device 4 includes a control section 7 that generates the above-mentioned control information.

For example, when the first switching control device 3_1 and the second switching control device 3_2 are connected to the central control device 4, the control unit 7 in the central control device 4 stores the position information of the first switching control device 3_1. and the position information of the second switching control device 3_2, first control information regarding the timing at which the first switching control device 3_1 performs switching control, and the timing at which the second switching control device 3_2 performs switching control. and second control information regarding the second control information. The control unit 7 supplies first control information to the first switching control device 3_1, and supplies second control information to the second switching control device 3_2. The first switching control device 3_1 performs switching control of the switching unit 5 within its own device based on the first control information generated by the control unit 7. Similarly, the second switching control device 3_2 performs switching control of the switching unit 5 within its own device based on the second control information generated by the control unit 7.

Since each switching control device 3 in FIG. 1 performs a switching operation, it can become a noise source. For example, if N switching control devices 3 are arranged close to each other and the electromagnetic noise generated by the switching operations of each switching control device 3 is uncorrelated, the electromagnetic noise generated by each switching control device 3 is The total will be multiplied by N. On the other hand, if the switching timing of the N switching control devices 3 is the same and the waveform shape (frequency characteristic) of the electromagnetic noise generated by the switching operation is also the same, each switching control device 3 The noise correlation value becomes 1, and the electromagnetic noise is emphasized N×N times. In this way, when the timings of the switching operations match and the waveform shapes (frequency characteristics) of electromagnetic noise due to the switching operations match, the electromagnetic noises interfere and reinforce each other, causing a noise enhancement effect.

The central control device 4 according to this embodiment generates control information regarding the timing at which each switching control device 3 performs switching control so that electromagnetic noise generated by the plurality of switching control devices 3 does not increase due to the noise enhancement effect. In this specification, the control information generated by the central control device 4 may be referred to as a control parameter.

The central control device 4 generates different control parameters for two or more switching control devices 3 that are likely to cause a noise enhancement effect among the plurality of switching control devices 3.

The central control device 4 may include a distance measuring section 8. The distance measurement unit 8 is configured to measure the distance between the first switching control device 3_1 and the second switching control device 3_2 based on the position information of the first switching control device 3_1 and the position information of the second switching control device 3_2. Measure the distance. In this case, the control unit 7 in the central control device 4 generates first control information (first control parameter) and second control information (second control parameter) based on the distance measured by the distance measurement unit 8. parameters). More specifically, if the distance measured by the distance measurement unit 8 exceeds a predetermined limit distance, the control unit 7 makes the first control parameter equal to the second control parameter, and controls the distance measurement unit If the distance measured in step 8 does not exceed the predetermined limit distance, the first control parameter and the second control parameter are made different from each other.

FIG. 3 is a diagram showing an example of the distance between any two switching control devices 3 among the N switching control devices 3 in the switching system 2. In the example of FIG. 3, the distance between the switching control device 3_1 and the switching control device 3_2 is 0.2 km, the distance between the switching control device 3_1 and the switching control device 3_N is 20.0 km, and the distance between the switching control device 3_2 and the switching control device 3_N is It is 20.2km.

The central control device 4 sets different control parameters for the switching control device 3_1 and the switching control device 3_2, which are close to each other, and sets different control parameters to the switching control device 3_2 and the switching control device 3_N, which are far apart. Set the same control parameters.

Since the switching control device 3_2 and the switching control device 3_N are far apart, even if the same control parameters are set, there is no fear that the electromagnetic noises generated by each switching control device 3 will be reinforced. In other words, electromagnetic noise is attenuated by distance, so even if the timing and noise waveform of electromagnetic noise generated by two switching control devices 3 located far apart match, the combined electromagnetic noise will interfere. There is no risk that they will strengthen each other.

On the other hand, if the same control parameters are set for two switching control devices 3 that are close to each other, the electromagnetic noises will occur at the same timing, so that the electromagnetic noises will reinforce each other and generate large electromagnetic noises. Therefore, the central control device 4 sets different control parameters to the two switching control devices 3 that are close to each other.

In this way, the control unit 7 in the central control device 4 sets the control parameters of each switching control device 3 according to the distance between any two switching control devices 3 among the plurality of switching control devices 3. This can reduce the effects of electromagnetic noise.

Furthermore, even if the number of control parameters that can be generated by the control unit 7 is limited, the same control parameters can be set for two switching control devices 3 that are separated by a distance, so the control set by the control unit 7 The total number of parameters can be reduced.

When the speed of light, that is, the speed of electromagnetic waves is c, the frequency of power supply noise is f, and the wavelength of electromagnetic waves is λ, the propagation loss L [dB] in free space at distance d is expressed by the following equation (1).

In equation (1), the propagation loss L becomes 3 [dB] when the transmission power increases by 0.5 times. Also, the transmission power is 0.25 times when the propagation loss L = 6 [dB], the transmission power is 0.1 times when L = 10 [dB], and the transmission power is 0.1 times when the propagation loss becomes L = 20 [dB]. This is when the transmission power becomes 0.01 times.

FIG. 4 is a diagram showing the relationship between the distance d and the propagation loss L obtained from equation (1). FIG. 4 shows four waveforms w1 to w4 of four types of frequencies f=300 kHz, 1 MHz, 3 MHz, and 10 MHz, which are frequency components of power supply noise. At any frequency, the propagation loss L increases as the distance increases.

When formula (1) is transformed into a formula in which the transmission power is multiplied by k, the following formula (2) is obtained.

When formula (2) is solved for distance d, the following formula (3) is obtained.

The control unit 7 in the central control device 4 sets the distance d calculated by equation (3) as a predetermined limit distance, and determines whether the distance between the two switching control devices 3 exceeds the predetermined limit distance. judge. For example, k is 0.25. When the two switching control devices 3 perform switching operations at the same timing and the electromagnetic noise waveform shapes due to the switching operations are the same, the electromagnetic noise will be 2×2=4 times as large due to the noise enhancement effect. However, if k=0.25, the two switching control devices 3 transmit power to 1/4, so even if a noise enhancement effect occurs, there is no risk of exceeding the original electromagnetic noise level. .

In this way, if the distance between the two switching control devices 3 exceeds the limit distance determined by equation (3) with k=0.25, these two switching control devices 3 are connected at the same timing. Even if the electromagnetic noise waveform shapes caused by the switching operation are the same, it is thought that no noise enhancement effect will occur.

Each of the plurality of switching control devices 3 shown in FIG. 1 is applied to, for example, a power conversion device having the switching unit 5, but the plurality of power conversion devices do not necessarily have the same power conversion capacity. The larger the power conversion capacity of the power conversion device, the greater the electromagnetic noise generated by the switching control device 3. Therefore, it is desirable that the control unit 7 in the central control device 4 sets control parameters taking into account not only the position information of each switching control device 3 but also the power conversion capacity.

FIG. 5 is a block diagram showing the internal configuration of each switching control device 3 in FIG. 1. As shown in FIG. 5, each switching control device 3 includes a switching control section 6 and a position information holding section 14. The switching control section 6 includes a PWM (Pulse Width Modulation) signal generation section 15 , a compensation section 16 , and a carrier signal generation section 17 .

The PWM signal generation section 15 generates a PWM signal for turning the switching section 5 on or off. As will be described later, the PWM signal generation unit 15 generates a PWM signal by comparing the magnitude relationship between the carrier signal generated by the carrier signal generation unit 17 and the command signal generated by the compensation unit 16.

The compensation unit 16 generates a compensation value so that the AC signal output from the switching unit 5 matches the target signal, and also generates a command signal based on the compensation value. The command signal is input to the PWM signal generation section 15.

The carrier signal generation unit 17 generates a carrier signal based on control parameters from the central control device 4. For example, the carrier signal generation unit 17 generates a carrier signal having at least one of a frequency and a phase according to the control parameter. The control parameter may include a signal obtained by modulating a carrier frequency that is a frequency of a carrier signal. Further, the central control device 4 may update the control parameters at preset time intervals. The carrier signal is, for example, a triangular wave signal. Note that the carrier signal may be a sawtooth signal, a sine wave signal, a rectangular wave signal, etc., and the waveform shape is not limited. The carrier signal generated by the carrier signal generation section 17 is input to the PWM signal generation section 15.

The carrier signal generation unit 17 may not only control at least one of the frequency and the phase of the carrier signal, but also the waveform shape, signal amplitude, etc. of the carrier signal based on the control parameters.

The position information holding unit 14 holds position information of the switching control device 3. The position information holding unit 14 transmits the held position information to the central control device 4.

In addition, the switching control device 3 may include a position information acquisition section 18. The position information acquisition unit 18 acquires the position information of the switching control device 3 by some means. The acquired position information is held in the position information holding unit 14.

The location information acquisition unit 18 may receive location information by receiving radio waves from a GNSS (Global Navigation Satellite System), for example. Alternatively, the position information acquisition unit 18 may acquire position information input by a worker or the like when the switching control device 3 is installed. Alternatively, the position information acquisition unit 18 may acquire the position information input to the central control device 4 without going through the control device 3.

FIG. 6 is a timing diagram illustrating the processing operation of the PWM signal generation section 15. The command signal w5 generated by the compensator 16 has a frequency comparable to the frequency of the AC signal output by the switching unit 5 (for example, 50 Hz to 60 Hz). The carrier signal w6 generated by the carrier signal generation unit 17 is a signal having a much higher frequency than the command signal w5, and is, for example, a triangular wave signal. For example, the PWM signal generation unit 15 sets the PWM signal W7 to a high level when the signal amplitude of the command signal w5 is larger than the signal amplitude of the carrier signal w6, and when the signal amplitude of the command signal w5 is less than or equal to the signal amplitude of the carrier signal w6. sets the PWM signal W7 to low level. As a result, as shown in FIG. 6, a PWM signal W7 whose pulse width changes is generated.

The PWM signal W7 is used to control the timing at which the switching section 5 is turned on or off. The central control device 4 can control the pulse width of the PWM signal W7 by controlling at least one of the frequency and the phase of the carrier signal w6. Thereby, the timing at which the switching section 5 performs the switching operation can be controlled, and the timing at which electromagnetic noise is generated can be controlled.

7 and 8 are diagrams showing a specific example of the switching system 2 according to the first embodiment. FIG. 7 shows an example in which there are three switching control devices 3_1, 3_2, and 3_3 in the switching system 2, and each of the switching control devices 3_1 to 3_3 controls the switching operations of three switching sections. The central control device 4 acquires the position information of the three switching control devices 3_1 to 3_3, and supplies different control parameters to the two neighboring switching control devices (3_1 and 3_2) and (3_2 and 3_3), The same control parameters are supplied to two separate switching control devices (3_1 and 3_3). For example, as shown in FIG. 8, the central control device generates control parameters so that the three switching units controlled by the switching control device 3_1 perform switching operations at different carrier frequencies fc1, fc2, and fc3. Further, the central control device generates control parameters so that the three switching units controlled by the switching control device 3_2 perform switching operations at different carrier frequencies fc4, fc5, and fc6, respectively. Further, the central control device generates control parameters so that the three switching units controlled by the switching control device 3_3 perform switching operations at different carrier frequencies fc1, fc2, and fc3, respectively. By using the same control parameters in the switching control devices 3_1 and 3_3, the total number of control parameters can be reduced.

In this manner, in the first embodiment, the central control device 4 connected to the plurality of switching control devices 3 generates control parameters for each switching control device 3 based on the position information of the plurality of switching control devices 3. do. Thereby, it is possible to prevent the possibility that electromagnetic noise generated by each switching control device 3 will be emphasized. In particular, the central control device 4 measures the distance between any two switching control devices 3 among the plurality of switching control devices 3, and determines whether the distance between the two switching control devices 3 exceeds a predetermined limit distance or not. It switches whether to supply the same control parameters to the switching control device 3 or to supply mutually different control parameters. Thereby, the noise enhancement effect can be reliably prevented with a small number of control parameters.

(Second embodiment)
In the first embodiment, an example was shown in which the central control device 4 controls all the switching control devices 3 in the switching system 2. There may be other switching control devices 3 that are not under the control management of the control device 4.

FIG. 9 is a block diagram showing a schematic configuration of a switching system 2a according to the second embodiment. The switching system 2a in FIG. 9 includes a plurality of switching control devices 3_1, 3_2, and 3_3 that are under the control and management of the central control device 4, one or more external devices that are not under the control and management of the central control device 4, and an estimator 19. It is equipped with The external devices are noise sources whose noise patterns do not change to some extent, and are referred to as switching control devices 3_4, 3_5, and 3_6 in this specification and FIG. 9.

The central control device 4 individually transmits control parameters to the plurality of switching control devices 3_1, 3_2, and 3_3 under control management, and controls the timing of switching control performed by each switching control device 3_1, 3_2, and 3_3. can do. On the other hand, the central control device 4 cannot transmit control parameters to the switching control devices 3_4, 3_5, and 3_6 that are not under control management, and therefore cannot control the timing of switching operations of the switching control devices 3_4, 3_5, and 3_6.

The number of switching control devices 3_1, 3_2, 3_3 whose switching operation timings can be controlled by the central control device 4 and the number of switching control devices 3_4, 3_5, 3_6 whose switching operation timings cannot be controlled by the central control device 4 are arbitrary.

The estimation unit 19 estimates the position information and control parameters of the switching control devices 3_4, 3_5, and 3_6 that are not under the control management of the central control device 4. The control parameter to be estimated is, for example, the frequency of the carrier signal of the switching control devices 3_4, 3_5, and 3_6 (hereinafter referred to as carrier frequency). The position information of the switching control devices 3_4, 3_5, and 3_6 can be acquired, for example, by receiving radio waves from GNSS when measuring power supply noise.

The switching control devices 3_4, 3_5, and 3_6 generate electromagnetic noise at frequencies near integral multiples of the carrier frequency. Therefore, the estimation unit 19 can measure the electromagnetic noise generated near the switching control devices 3_4, 3_5, and 3_6, and estimate the carrier frequency from the frequency characteristics of the measured waveform of the electromagnetic noise. The central control device 4 determines the switching control device 3_1 based on the position information of each switching control device 3_4, 3_5, and 3_6 estimated by the estimation unit 19 and the carrier frequency used by each switching control device 3_4, 3_5, and 3_6. , 3_2, and 3_3 control parameters are generated.

FIG. 10 is a diagram showing the distance between any two switching control devices 3 among the plurality of switching control devices 3 (3_1 to 3_6) in the switching system 2a of FIG. FIG. 11 is a diagram showing carrier frequencies included in the control parameters of the switching control device 3 estimated by the estimator 19.

From the estimation results in FIG. 11, it can be seen that the switching control devices 3_4 and 3_5 use the carrier frequency f1, and the switching control device 3_6 uses the carrier frequency f2. Here, since the switching control device 3_3 is close to the switching control device 3_6, it sets a carrier frequency f1 different from the carrier frequency f2 of the switching control device 3_6. Further, since the switching control device 3_1 is close to the switching control devices 3_4 and 3_5 and far from the switching control devices 3_3 and 3_6, the switching control device 3_1 has a carrier frequency different from that of the switching control devices 3_4 and 3_5, and the same as that of the switching control device 3_6. The carrier frequency f2 is set. Since the switching control device 3_2 is close to the switching control devices 3_1, 3_4, and 3_5, it sets f3 different from these carrier frequencies.

In this manner, in the second embodiment, if there are switching control devices 3_4 to 3_6 that are not under the control management of the central control device 4, the estimation unit 19 calculates the position information of the switching control devices 3_4 to 3_6. The control parameters are estimated and the estimated information is sent to the central controller 4. Thereby, the central control device 4 controls the switching control devices 3 located close to the switching control devices 3_4 to 3_6 so that they do not use the carrier frequencies used by the switching control devices 3_4 to 3_6. Thereby, even if there are switching control devices 3_4 to 3_6 that are not under the control management of the central control device 4, it is possible to prevent the other switching control devices 3_1 to 3_3 from producing a noise enhancement effect, and the switching system 2a It is possible to reduce the electromagnetic noise generated from the

［項目７］
前記制御装置の制御管理下にない第３のスイッチング制御装置の位置情報と、前記第３のスイッチング制御装置のスイッチング制御を行うタイミングに関する第３の制御情報と、を推定する推定部を備え、
前記制御部は、前記推定部で推定された前記第３のスイッチング制御装置の位置情報及び前記第３の制御情報に基づいて、前記第１の制御情報及び前記第２の制御情報を生成する、項目１乃至６のいずれか一項に記載の制御装置。
［項目８］
前記推定部は、前記第３のスイッチング制御装置のキャリア周波数の整数倍の周波数に基づいて前記第３の制御情報を推定する、項目７に記載の制御装置。
［項目９］
前記制御部は、前記第１のスイッチング制御装置及び前記第２のスイッチング制御装置のそれぞれにおける電源ノイズの周波数ｆに応じて、電磁ノイズの発生量が以下の第１条件、第２条件、第３条件、又は第４条件を満たすように、前記第１の制御情報及び前記第２の制御情報を設定する、項目１乃至８のいずれか一項に記載の制御装置。
第１条件： 150kHz≦ｆ≦ 490kHzの場合は、13.5dBuA/m 以下
第２条件：490kHz <ｆ≦ 3.95MHzの場合は、3.5dBuA/m 以下
第３条件：3.95MHz< f ≦ 20MHzの場合は、-11.5dBuA/m 以下
第４条件：20MHz< f ≦ 30MHzの場合は、-21.5dBuA/m 以下
［項目１０］
前記制御部は、第１のスイッチング制御装置の位置情報と第２のスイッチング制御装置の位置情報とに基づいて、前記第１のスイッチング制御装置がスイッチング制御に用いる第１のキャリア信号の周波数又は位相の少なくとも一方を制御するとともに、前記第２のスイッチング制御装置がスイッチング制御に用いる第２のキャリア信号の周波数又は位相の少なくとも一方を制御する、項目１乃至８のいずれか一項に記載の制御装置。
［項目１１］
前記第１の制御情報は、前記第１のキャリア信号の周波数又は位相の少なくとも一方の情報を含み、
前記第２の制御情報は、前記第２のキャリア信号の周波数又は位相の少なくとも一方の情報を含む、項目１０に記載の制御装置。
［項目１２］
前記制御部は、前記第１のスイッチング制御装置の電力変換容量に基づいて前記第１の制御情報を生成し、かつ前記第２のスイッチング制御装置の電力変換容量に基づいて前記第２の制御情報を生成する、項目１乃至１１のいずれか一項に記載の制御装置。
［項目１３］
前記第１のスイッチング制御装置及び前記第２のスイッチング制御装置は、再生可能エネルギー発電設備で発電された直流電圧を交流電圧に変換する電力変換装置のスイッチング制御を行う、項目１乃至１２のいずれか一項に記載の制御装置。
［項目１４］
第１のスイッチング部のスイッチング制御を行う第１のスイッチング制御装置と、
第２のスイッチング部のスイッチング制御を行う第２のスイッチング制御装置と、
前記第１のスイッチング制御装置の位置情報と前記第２のスイッチング制御装置の位置情報とに基づいて、前記第１のスイッチング制御装置がスイッチング制御を行うタイミングに関する第１の制御情報と、前記第２のスイッチング制御装置がスイッチング制御を行うタイミングに関する第２の制御情報とを生成する統合制御装置と、を備え、
前記第１のスイッチング制御装置は、前記第１の制御情報に基づいて前記第１のスイッチング部のスイッチング制御を行い、
前記第２のスイッチング制御装置は、前記第２の制御情報に基づいて前記第１のスイッチング部のスイッチング制御を行う、スイッチングシステム。
［項目１５］
前記第１のスイッチング制御装置は、前記第１のスイッチング制御装置の位置情報を保持する第１の保持部を有し、
前記第２のスイッチング制御装置は、前記第２のスイッチング制御装置の位置情報を保持する第２の保持部を有し、
前記統合制御装置は、前記第１の保持部に保持された位置情報と、前記第２の保持部に保持された位置情報とに基づいて、前記第１の制御情報及び前記第２の制御情報を生成する、項目１４に記載のスイッチングシステム。
［項目１６］
前記第１のスイッチング制御装置は、前記第１のスイッチング制御装置の位置情報を取得する第１の取得部を有し、
前記第２のスイッチング制御装置は、前記第２のスイッチング制御装置の位置情報を取得する第２の取得部を有し、
前記第１の保持部は、前記第１の取得部で取得された位置情報を保持し、
前記第２の保持部は、前記第２の取得部で取得された位置情報を保持する、項目１５に記載のスイッチングシステム。
［項目１７］
前記第１の取得部及び前記第２の取得部は、ＧＮＳＳ（Global Navigation Satellite System）からの電波を受信して位置情報を取得する、項目１６に記載のスイッチングシステム。
［項目１８］
前記第１の取得部は、前記第１のスイッチング制御装置の設置時に、前記第１のスイッチング制御装置の位置情報を取得し、
前記第２の取得部は、前記第２のスイッチング制御装置の設置時に、前記第２のスイッチング制御装置の位置情報を取得する、項目１６に記載のスイッチングシステム。
［項目１９］
前記統合制御装置の制御管理下にない第３のスイッチング制御装置と、
前記第３のスイッチング制御装置の位置情報と、前記第３のスイッチング制御装置のスイッチング制御を行うタイミングに関する第３の制御情報と、を推定する推定部と、を備え、
前記統合制御装置は、前記推定部で推定された前記第３のスイッチング制御装置の位置情報及び前記第３の制御情報に基づいて、前記第１の制御情報及び前記第２の制御情報を生成する、項目１４乃至１８のいずれか一項に記載のスイッチングシステム。
［項目２０］
第１のスイッチング制御装置の位置情報と第２のスイッチング制御装置の位置情報とに基づいて、前記第１のスイッチング制御装置がスイッチング制御を行うタイミングに関する第１の制御情報と、前記第２のスイッチング制御装置がスイッチング制御を行うタイミングに関する第２の制御情報とを生成する、制御方法。 [Additional notes]
[Item 1]
Based on the position information of the first switching control device and the position information of the second switching control device, first control information regarding the timing at which the first switching control device performs switching control; A control device, comprising: a control unit that generates second control information regarding timing at which the control device performs switching control.
[Item 2]
The control unit causes the first switching control device and the second switching control device to perform switching control based on position information of the first switching control device and position information of the second switching control device. The control device according to item 1, which determines the timing to perform the operation.
[Item 3]
The control unit according to item 1 or 2, wherein the control unit supplies the first control information to the first switching control device and supplies the second control information to the second switching control device. Device.
[Item 4]
a distance measuring unit that measures the distance between the first switching control device and the second switching control device based on position information of the first switching control device and position information of the second switching control device; Equipped with
The control device according to any one of items 1 to 3, wherein the control unit generates the first control information and the second control information based on the distance measured by the distance measurement unit.
[Item 5]
When the distance measured by the distance measuring section exceeds a predetermined limit distance, the control section makes the first control information and the second control information equal, and the distance measured by the distance measuring section is configured to equalize the first control information and the second control information. The control device according to item 4, wherein the first control information and the second control information are made different from each other when the distance obtained does not exceed a predetermined limit distance.
[Item 6]
The distance measuring unit calculates the predetermined distance limit d based on the following formula (4), where the speed of light is c, the frequency of power supply noise is f, and the transmission power loss is k times the transmission power. The control device according to item 5.

[Item 7]
an estimating unit that estimates position information of a third switching control device that is not under control management of the control device, and third control information regarding the timing of performing switching control of the third switching control device;
The control unit generates the first control information and the second control information based on the position information of the third switching control device and the third control information estimated by the estimation unit. The control device according to any one of items 1 to 6.
[Item 8]
The control device according to item 7, wherein the estimator estimates the third control information based on a frequency that is an integral multiple of a carrier frequency of the third switching control device.
[Item 9]
The control unit is configured such that the amount of electromagnetic noise generated satisfies the following first conditions, second conditions, and third conditions, depending on the frequency f of power supply noise in each of the first switching control device and the second switching control device. The control device according to any one of items 1 to 8, wherein the first control information and the second control information are set so as to satisfy a condition or a fourth condition.
1st condition: If 150kHz≦f≦490kHz, 13.5dBuA/m or less Second condition: If 490kHz <f≦3.95MHz, 3.5dBuA/m or less Third condition: If 3.95MHz< f≦20MHz , -11.5dBuA/m or less 4th condition: If 20MHz< f ≦ 30MHz, -21.5dBuA/m or less [Item 10]
The control unit is configured to adjust the frequency or phase of a first carrier signal used by the first switching control device for switching control based on position information of the first switching control device and position information of the second switching control device. The control device according to any one of items 1 to 8, wherein the control device controls at least one of the frequency or the phase of the second carrier signal used for switching control by the second switching control device. .
[Item 11]
The first control information includes information on at least one of the frequency or phase of the first carrier signal,
The control device according to item 10, wherein the second control information includes information on at least one of a frequency and a phase of the second carrier signal.
[Item 12]
The control unit generates the first control information based on the power conversion capacity of the first switching control device, and generates the second control information based on the power conversion capacity of the second switching control device. The control device according to any one of items 1 to 11, which generates.
[Item 13]
Any one of items 1 to 12, wherein the first switching control device and the second switching control device perform switching control of a power conversion device that converts DC voltage generated by renewable energy power generation equipment into AC voltage. The control device according to item 1.
[Item 14]
a first switching control device that performs switching control of the first switching unit;
a second switching control device that performs switching control of the second switching unit;
Based on the position information of the first switching control device and the position information of the second switching control device, first control information regarding the timing at which the first switching control device performs switching control; an integrated control device that generates second control information regarding the timing at which the switching control device performs switching control;
The first switching control device performs switching control of the first switching unit based on the first control information,
The second switching control device is a switching system that performs switching control of the first switching unit based on the second control information.
[Item 15]
The first switching control device has a first holding section that holds position information of the first switching control device,
The second switching control device has a second holding section that holds position information of the second switching control device,
The integrated control device stores the first control information and the second control information based on the position information held in the first holding unit and the position information held in the second holding unit. The switching system according to item 14, which generates.
[Item 16]
The first switching control device includes a first acquisition unit that acquires position information of the first switching control device,
The second switching control device includes a second acquisition unit that acquires position information of the second switching control device,
The first holding unit holds the position information acquired by the first acquisition unit,
The switching system according to item 15, wherein the second holding unit holds the position information acquired by the second acquisition unit.
[Item 17]
The switching system according to item 16, wherein the first acquisition unit and the second acquisition unit acquire position information by receiving radio waves from a GNSS (Global Navigation Satellite System).
[Item 18]
The first acquisition unit acquires position information of the first switching control device when the first switching control device is installed,
17. The switching system according to item 16, wherein the second acquisition unit acquires the position information of the second switching control device when the second switching control device is installed.
[Item 19]
a third switching control device that is not under control management of the integrated control device;
an estimator that estimates position information of the third switching control device and third control information regarding timing for performing switching control of the third switching control device;
The integrated control device generates the first control information and the second control information based on the position information of the third switching control device and the third control information estimated by the estimation unit. , the switching system according to any one of items 14 to 18.
[Item 20]
Based on the position information of the first switching control device and the position information of the second switching control device, first control information regarding the timing at which the first switching control device performs switching control; A control method that generates second control information regarding timing at which a control device performs switching control.

Aspects of the present disclosure are not limited to the individual embodiments described above, and include various modifications that can be conceived by those skilled in the art, and the effects of the present disclosure are not limited to the contents described above. That is, various additions, changes, and partial deletions are possible without departing from the conceptual idea and spirit of the present disclosure derived from the content defined in the claims and equivalents thereof.

1 Control device, 2 Switching system, 2a Switching system, 3 Switching control device, 4 Central control device, 5 Switching section, 6 Switching control section, 7 Control section, 8 Distance measuring section, 11 Boost chopper circuit, 12 Inverter circuit, 13 Transformer, 14 Position information holding unit, 15 PWM signal generation unit, 16 Compensation unit, 17 Carrier signal generation unit, 18 Position information acquisition unit, 19 Estimation unit

Claims (20)

Based on the position information of the first switching control device and the position information of the second switching control device, first control information regarding the timing at which the first switching control device performs switching control; A control device, comprising: a control unit that generates second control information regarding timing at which the control device performs switching control. The control unit causes the first switching control device and the second switching control device to perform switching control based on position information of the first switching control device and position information of the second switching control device. The control device according to claim 1, wherein the control device determines the timing to perform the operation. The control device according to claim 1, wherein the control unit supplies the first control information to the first switching control device and supplies the second control information to the second switching control device. . a distance measuring unit that measures the distance between the first switching control device and the second switching control device based on position information of the first switching control device and position information of the second switching control device; Equipped with
The control device according to claim 1, wherein the control unit generates the first control information and the second control information based on the distance measured by the distance measurement unit. When the distance measured by the distance measuring section exceeds a predetermined limit distance, the control section makes the first control information and the second control information equal, and the distance measured by the distance measuring section is configured to equalize the first control information and the second control information. The control device according to claim 4, wherein the first control information and the second control information are made different from each other when the distance obtained does not exceed a predetermined limit distance. The distance measurement unit calculates the predetermined distance limit d based on the following formula (1), where the speed of light is c, the frequency of power supply noise is f, and the transmission power loss is k times the transmission power. The control device according to claim 5.

an estimating unit that estimates position information of a third switching control device that is not under control management of the control device, and third control information regarding the timing of performing switching control of the third switching control device;
The control unit generates the first control information and the second control information based on the position information of the third switching control device and the third control information estimated by the estimation unit. The control device according to claim 1. The control device according to claim 7, wherein the estimator estimates the third control information based on a frequency that is an integral multiple of a carrier frequency of the third switching control device. The control unit is configured such that the amount of electromagnetic noise generated satisfies the following first conditions, second conditions, and third conditions, depending on the frequency f of power supply noise in each of the first switching control device and the second switching control device. The control device according to claim 1, wherein the first control information and the second control information are set so as to satisfy a condition or a fourth condition.
1st condition: If 150kHz≦f≦490kHz, 13.5dBuA/m or less Second condition: If 490kHz <f≦3.95MHz, 3.5dBuA/m or less Third condition: If 3.95MHz< f≦20MHz , -11.5dBuA/m or less 4th condition: If 20MHz< f ≦ 30MHz, -21.5dBuA/m or less The control unit is configured to adjust the frequency or phase of a first carrier signal used by the first switching control device for switching control based on position information of the first switching control device and position information of the second switching control device. The control device according to claim 1, wherein the second switching control device controls at least one of a frequency and a phase of a second carrier signal used for switching control. The first control information includes information on at least one of the frequency or phase of the first carrier signal,
The control device according to claim 10, wherein the second control information includes information on at least one of a frequency and a phase of the second carrier signal. The control unit generates the first control information based on the power conversion capacity of the first switching control device, and generates the second control information based on the power conversion capacity of the second switching control device. The control device according to claim 1, wherein the control device generates. The control according to claim 1, wherein the first switching control device and the second switching control device perform switching control of a power conversion device that converts DC voltage generated by renewable energy power generation equipment into AC voltage. Device. a first switching control device that performs switching control of the first switching unit;
a second switching control device that performs switching control of the second switching unit;
Based on the position information of the first switching control device and the position information of the second switching control device, first control information regarding the timing at which the first switching control device performs switching control; an integrated control device that generates second control information regarding the timing at which the switching control device performs switching control;
The first switching control device performs switching control of the first switching unit based on the first control information,
The second switching control device is a switching system that performs switching control of the first switching unit based on the second control information. The first switching control device has a first holding section that holds position information of the first switching control device,
The second switching control device has a second holding section that holds position information of the second switching control device,
The integrated control device stores the first control information and the second control information based on the position information held in the first holding unit and the position information held in the second holding unit. 15. The switching system according to claim 14, wherein the switching system generates . The first switching control device includes a first acquisition unit that acquires position information of the first switching control device,
The second switching control device includes a second acquisition unit that acquires position information of the second switching control device,
The first holding unit holds the position information acquired by the first acquisition unit,
The switching system according to claim 15, wherein the second holding unit holds the position information acquired by the second acquisition unit. The switching system according to claim 16, wherein the first acquisition unit and the second acquisition unit acquire position information by receiving radio waves from a GNSS (Global Navigation Satellite System). The first acquisition unit acquires position information of the first switching control device when the first switching control device is installed,
The switching system according to claim 16, wherein the second acquisition unit acquires position information of the second switching control device when the second switching control device is installed. a third switching control device that is not under control management of the integrated control device;
an estimator that estimates position information of the third switching control device and third control information regarding timing for performing switching control of the third switching control device;
The integrated control device generates the first control information and the second control information based on the position information of the third switching control device and the third control information estimated by the estimation unit. 15. The switching system of claim 14. Based on the position information of the first switching control device and the position information of the second switching control device, first control information regarding the timing at which the first switching control device performs switching control; A control method that generates second control information regarding timing at which a control device performs switching control.